CN217842966U

CN217842966U - Pipeline damping device

Info

Publication number: CN217842966U
Application number: CN202222117673.8U
Authority: CN
Inventors: 代建波; 汪浩; 石万涛; 王赵诚; 王治强; 朱江; 马静; 赵泽文
Original assignee: Xian Shiyou University
Current assignee: Xian Shiyou University
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-11-18
Anticipated expiration: 2032-08-12

Abstract

The utility model belongs to the technical field of shock absorption, and relates to a pipeline damping shock absorption device, in particular to an oil and gas transmission pipeline damping shock absorption device, which comprises a connecting piece and a piezoelectric variable friction damping unit; the center of the connecting piece is provided with a circular through hole, the piezoelectric variable friction damping unit is arranged inside the connecting piece, and the axial direction of the piezoelectric variable friction damping unit is vertical to the axial direction of the circular through hole. The utility model provides a pipeline damping device carries out quick and accurate regulation, resources are saved, convenient to use to the shock attenuation dynamics.

Description

Pipeline damping device

Technical Field

The utility model belongs to the technical field of the shock attenuation, a pipeline damping device is related to, especially, relate to oil gas conveying pipeline damping device.

Background

The oil and gas transmission pipeline engineering is an important component of the national life line and plays a very important role in national economy; along with the increasing demand of modern industry for petrochemical energy, the scale of oil and gas transmission pipeline line engineering is also expanding and increasing continuously, it is one of the common ways to adopt a crossing structure to realize the aerial crossing of an oil and gas transmission pipeline, the main stress component of a cable-stayed pipe bridge is a stay cable, and the gravity of the bridge and the active load of the bridge are mostly transmitted to a tower column through the stay cable. However, when the cable-stayed bridge structure is subjected to strong wind vibration or earthquake action in the external environment, the cable-stayed bridge structure collapses, the oil and gas transmission pipeline is damaged, the safety of the oil and gas transmission pipeline is affected, and the safety of the whole oil and gas transmission pipeline engineering is seriously threatened, so that the cable-stayed bridge structure has important significance for the theoretical research of the seismic design of the oil and gas transmission pipeline and the pipeline engineering structure.

When the existing oil and gas conveying pipeline has much shock absorption, the shock absorption of the pipeline is less concerned to a cable-stayed bridge and a stay cable; even though shock absorption is reported on pipes, the following problems exist: the shock absorption force cannot be adjusted, and the shock absorption is too large, so that resource waste is easily caused; the too small shock absorption can not play a shock absorption role, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

The shock-absorbing strength to current pipeline shock attenuation existence can not adjust, awkward technical problem, the utility model provides a pipeline damping device carries out quick and accurate regulation, resources are saved, convenient to use to the shock attenuation dynamics.

In order to realize the purpose, the utility model discloses a technical scheme is:

a pipeline damping shock absorption device comprises a connecting piece and a piezoelectric variable friction damping unit; the center of the connecting piece is provided with a circular through hole, the piezoelectric variable friction damping unit is arranged inside the connecting piece, and the axial direction of the piezoelectric variable friction damping unit is vertical to the axial direction of the circular through hole.

Furthermore, the piezoelectric variable friction damping unit comprises a closed box body, an actuating rod, a driver sleeve and a plane friction plate; the closed box body is arranged in the connecting piece, the driver sleeve and the actuating rod are arranged in the closed box body, the piezoelectric ceramic driver is arranged in the driver sleeve, two end parts of the driver sleeve are connected with the opposite inner walls of the closed box body through plane friction plates, and the axial direction of the driver sleeve is vertical to the axial direction of the actuating rod; one end of the actuating rod is connected with the side wall of the driver sleeve, and the other end of the actuating rod is connected with the side wall of the closed box body; the closed box body is arranged in the connecting piece, and the axial direction of the circular through hole is vertical to the axial direction of the driver sleeve and the axial direction of the actuating rod.

Further, the driver sleeve is plural; the driver sleeves are distributed in the closed box body in a row-by-row manner; the driver sleeves on the same row are sequentially connected, and the side wall of the driver sleeve on the uppermost layer is connected with the actuating rod; the plurality of driver sleeves are connected with the opposite inner walls of the closed box body through the plane friction plates.

Furthermore, the closed box body is formed by movably connecting a driver shell and a driver plane cover plate; the driver sleeve and the actuating rod are arranged in the driver shell, and the side wall of the driver sleeve is connected with the opposite inner wall of the driver shell through the actuating rod.

Furthermore, the number of the piezoelectric variable friction damping units is two, and the piezoelectric variable friction damping units are axially and symmetrically distributed in the connecting piece relative to the circular through hole.

Furthermore, the connecting piece is a connecting structure which is composed of a pipeline top seat and a pipeline base which have the same structure and is provided with a circular through hole in the middle; the pipeline top seat and the pipeline base are symmetrically clamped outside the driver shell.

Further, the pipeline top seat is connected with the pipeline base through a fastener.

Further, the fastener comprises a limiting bolt and a locknut; the limiting bolt sequentially penetrates through the pipeline top seat and the pipeline base in the axial direction and is fastened through the locknut.

Furthermore, the fasteners are uniformly distributed on the pipeline top seat and the pipeline base.

Furthermore, the pipeline damping and shock-absorbing device further comprises an anti-skid rubber pad arranged on the hole wall of the circular through hole.

The utility model has the advantages that:

1. the utility model provides a pipeline damping device overlaps the connecting piece on the pipeline, and circular through-hole matches with the pipeline size, and rethread locating stud and location spiral shell section of thick bamboo install pipeline damping device fast on cable-stay tube bridge's bridge floor, and damping device produces the friction pretightning force through the contrary effect of piezoelectricity, and the efficiency of damping buffering is better, effectively avoids the pipeline to take place the influence that the vibration brought, and the antidetonation is effectual, resources are saved.

2. The utility model discloses a piezoceramics driver in the piezoelectricity becomes friction damping unit adjusts the normal pressure of friction surface in real time, changes the pretightning force of friction disc through the change of friction surface normal pressure to change frictional force, can realize the quick accurate regulation of frictional force, effective resources are saved, convenient to use.

3. The utility model provides a connecting piece is the connection structure that the centre of compriseing the pipeline footstock that the structure is the same and pipeline base is circular through-hole, sets up anti-skidding rubber pad on the pore wall of circular through-hole, and the installation is dismantled conveniently, and anti-skidding rubber pad slides on the pipeline when avoiding pipeline damping device to produce vibration, and stability is good.

Drawings

FIG. 1 is a sectional view of the front view of the pipe damper according to the present invention;

FIG. 2 is a cross-sectional view of a side view of the pipe damper of the present invention;

fig. 3 is an oblique view of the inverted pipe damper of the present invention.

In the figure:

1-a pipe base; 2-a pipeline footstock; 3-a drive housing; 4-actuating rod; 5-a driver sleeve; 6-piezoelectric ceramic driver; 7-driver plane cover plate; 8-plane friction plate; 9-pre-tightening the bolt; 10-a limit bolt; 11-locknut; 12-a limit nut.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of clear description of the technical solution of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.

The utility model discloses mainly used oil gas pipeline-cable-stay tube bridge structural system's anti-wind, antidetonation, the utility model discloses a damping device utilizes piezoceramics's inverse piezoelectric effect, turns into mechanical signal with electrical signal, changes the pretightning force of friction disc through the change of friction surface normal pressure to change frictional force, realize reducing the vibration of pipeline to the quick accurate regulation of the damping cushion force of making the actuating rod, make the efficiency of damping buffering better, resources are saved.

Examples

Referring to fig. 1 to 3, the pipe damping shock absorbing device provided by the present embodiment includes a connecting member and a piezoelectric variable friction damping unit; a circular through hole is formed in the center of the connecting piece, the piezoelectric variable friction damping unit is arranged inside the connecting piece, and the axial direction of the piezoelectric variable friction damping unit is perpendicular to the axial direction of the circular through hole.

The piezoelectric variable friction damping unit comprises a closed box body, an actuating rod 4, a driver sleeve 5 and a plane friction plate 8; the closed box body is arranged in the connecting piece, the driver sleeve 5 and the actuating rod 4 are both arranged in the closed box body, the piezoelectric ceramic driver 6 is arranged in the driver sleeve 5, two end parts of the driver sleeve 5 are both connected with the opposite inner walls of the closed box body through the plane friction plates 8, and the axial direction of the driver sleeve 5 is axially vertical to the actuating rod 4; one end of the actuating rod 4 is connected with the side wall of the driver sleeve 5, and the other end of the actuating rod 4 is connected with the side wall of the closed box body; the closed box body is arranged in the connecting piece, and the axial direction of the circular through hole is vertical to the axial direction of the driver sleeve 5 and the axial direction of the actuating rod 4.

The closed box body is formed by movably connecting a driver shell 3 and a driver plane cover plate 7; the driver sleeve 5 and the actuating rod 4 are both arranged in the driver housing 3, and the side wall of the driver sleeve 5 is connected with the opposite inner wall of the driver housing 3 through the actuating rod 4.

The driver sleeve 5 is plural; a plurality of driver sleeves 5 are distributed in the closed box body in a row-by-row manner; the driver sleeves 5 on the same row are sequentially connected from top to bottom, and the side wall of the driver sleeve 5 on the uppermost layer is connected with the actuating rod 4.

When the device is implemented, the closed box body is a rectangular box body, the number of the driver sleeves 5 is four, the driver sleeves are distributed in two rows and two columns, the axial directions of the driver sleeves 5 are all parallel to the bottom surface of the closed box body, one row is a layer and is distributed in the closed box body from top to bottom, and two driver sleeves 5 in each column are distributed in parallel; in each row, one end of the actuating rod 4 is downwards connected with the driver sleeve 5 on the upper layer, and the other end of the actuating rod 4 upwards penetrates through the short edge of the driver shell 3 and the pipeline top seat 2 and is connected and fastened with the pipeline top seat 2 through a limiting nut 12. The rods 4 in the other row are connected in the same manner. The left ends of the four driver sleeves are all contacted with the inner wall of the left side (long side) of the driver shell 3 through a plane friction plate 8; the right ends of the four driver sleeves are all in contact with the right side (long side) inner wall of the driver housing 3 through a planar friction plate 8. The left ends of the four driver sleeves 5 are connected with the inner wall of the left side of the closed box body through the plane friction plates 8, and the right ends of the four driver sleeves 5 are connected with the inner wall of the right side of the closed box body through the plane friction plates 8.

The driver shell 3 is C-shaped and is fixedly connected with the driver plane cover plate 7 through a pretightening bolt 9 to form a rectangular closed box body, and plane friction plates 8 are arranged on the long side walls in the closed box body.

The utility model discloses, piezoelectricity becomes friction damping unit is two, and inside the connecting piece about circular through-hole axial symmetry distribution.

The utility model is a connecting structure which is composed of a pipeline top seat 2 and a pipeline base seat 1 with the same structure and is provided with a circular through hole in the middle; the pipeline top seat 2 and the pipeline base seat 1 are symmetrically clamped outside the driver shell 3.

The utility model discloses, pipeline footstock 2 and pipeline base 1 all are the dysmorphism body of semicircular through-hole in central zone, and all set up the draw-in groove on pipeline footstock 2 and the pipeline base 1, and two piezoelectricity become friction damping unit axial direction parallel and place, and pipeline footstock 2 passes through the draw-in groove card on driver shell 3 from the top, and pipeline base 1 passes through the draw-in groove card on driver shell 3 from the below, and two semicircular through-holes form circular through-hole, the size of circular through-hole with treat pipeline external diameter looks adaptation. The piezoelectric variable friction damping units are respectively embedded into a half of the pipeline base 1 and the pipeline top seat 2, and the axis of each piezoelectric variable friction damping unit is axially vertical to the circular through hole.

The pipeline top seat 2 is connected with the pipeline base seat 1 through a fastener. The fastener comprises a limiting bolt 10 and a locknut 11; the limiting bolt 10 axially penetrates through the pipeline top seat 2 and the pipeline base seat 1 in sequence and is fastened through the locknut 11.

The fastener is a plurality of, and the equipartition is on pipeline footstock 2 and pipeline base 1. During the implementation, the fastener is four, distributes respectively 2 on the connecting piece of circular pupil both sides.

The pipeline damping and shock-absorbing device also comprises an anti-skid rubber pad arranged on the hole wall of the circular through hole, and an anti-skid effect is achieved.

During implementation, earlier block pipeline base 1 on the pipeline, semi-circular through-hole and the contact of one of them half outer wall of pipeline, all inlay the lower extreme of two piezoelectricity become friction damping unit in the draw-in groove on pipeline base 1, then make the upper end of two piezoelectricity become friction damping unit all inlay in the draw-in groove of pipeline footstock 2 from the top, semi-circular through-hole and the contact of the second half outer wall of pipeline, block the pipeline in circular through-hole, pipeline footstock 2 and pipeline base 1 all set up anti-skidding rubber pad with the contact surface of pipeline, play the cushioning effect, and realize fixing the firm of pipeline footstock 2 and pipeline base 1 through spacing bolt 10 and lock nut 11.

Finally, reverse excitation voltage is applied to the piezoelectric ceramic driver 6 in the piezoelectric variable friction damping unit, the piezoelectric ceramic driver 6 is reversely deformed, namely, the piezoelectric ceramic driver contracts in the polarization direction, because two ends of the driver sleeve 5 are in contact with the plane friction plate 8, friction is generated during vibration contraction, because the actuating rod 4 is fastened with the pipeline top seat 2 in a limiting mode, the pipeline top seat 2 is fastened with the pipeline base 1, the actuating rod 4 is driven to generate friction pretightening force along the axial direction of the actuating rod 4, the pipeline top seat 2 is fastened with the pipeline base 1, damping buffering effect is generated, and damping effect is achieved on the pipeline.

According to the principle of piezoelectric ceramics, the positive pressure of a friction surface is adjusted in real time, and the characteristics of the piezoelectric ceramics show that the piezoelectric ceramics can deform when voltage is applied to two ends of the piezoelectric ceramics, and the size of the deformation is in direct proportion to the applied voltage, namely the size of the deformation is controlled by the voltage. The utility model converts the electrical signal into the mechanical signal according to the inverse piezoelectric effect of the piezoelectric ceramics, and changes the pretightening force of the friction plate through the change of the positive pressure of the friction surface, thereby changing the friction force; consequently, the size of frictional force is controlled through the size of control piezoceramics driver both ends voltage, can realize carrying out quick accurate regulation to the frictional force of attenuator, simultaneously effectual realization damping shock-absorbing effect.

The above description is only for the preferred embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present application, and equivalent alternatives or modifications according to the technical solutions and the application concepts of the present application, which are within the technical scope of the present application.

Claims

1. A pipeline damping and shock absorption device is characterized by comprising a connecting piece and a piezoelectric variable friction damping unit; the center of the connecting piece is provided with a circular through hole, the piezoelectric variable friction damping unit is arranged inside the connecting piece, and the axial direction of the piezoelectric variable friction damping unit is vertical to the axial direction of the circular through hole.

2. The pipe damping shock absorber of claim 1, wherein the piezoelectric variable friction damping unit comprises a closed box, an actuating rod (4), an actuator sleeve (5) and a planar friction plate (8); the sealed box body is arranged in the connecting piece, the driver sleeve (5) and the actuating rod (4) are arranged in the sealed box body, the piezoelectric ceramic driver (6) is arranged in the driver sleeve (5), two end parts of the driver sleeve (5) are connected with the opposite inner wall of the sealed box body through the plane friction plate (8), and the axial direction of the driver sleeve (5) is axially vertical to the actuating rod (4); one end of the actuating rod (4) is connected with the side wall of the driver sleeve (5), and the other end of the actuating rod (4) is connected with the side wall of the closed box body; the closed box body is arranged in the connecting piece, and the axial direction of the circular through hole is vertical to the axial direction of the driver sleeve (5) and the axial direction of the actuating rod (4).

3. The pipe damping shock absorber device of claim 2, characterized in that the driver sleeve (5) is plural; the driver sleeves (5) are distributed in the closed box body in a row-by-row manner, the driver sleeves (5) on the same row are sequentially connected, and the side wall of the driver sleeve (5) on the uppermost layer is connected with the actuating rod (4); the driver sleeves (5) are all connected with the opposite inner walls of the closed box body through plane friction plates (8).

4. The pipe damping shock-absorbing device according to claim 3, wherein the closed box is formed by movably connecting a driver housing (3) and a driver plane cover plate (7); the driver sleeve (5) and the actuating rod (4) are both arranged in the driver shell (3), and the side wall of the driver sleeve (5) is connected with the opposite inner wall of the driver shell (3) through the actuating rod (4).

5. The pipe damping and shock absorbing device according to claim 4, wherein the piezoelectric variable friction damping units are two and are axially and symmetrically distributed in the connecting piece about the circular through hole.

6. The pipeline damping shock-absorbing device according to claim 4 or 5, characterized in that the connecting piece is a connecting structure with a circular through hole in the middle, and the connecting structure is composed of a pipeline top seat (2) and a pipeline base seat (1) which have the same structure; the pipeline top seat (2) and the pipeline base seat (1) are symmetrically clamped outside the driver shell (3).

7. The pipe damping shock absorber device of claim 6, characterized in that, the pipe top seat (2) is connected with the pipe base seat (1) through a fastener.

8. The pipe damping device according to claim 7, wherein the fastener comprises a limit bolt (10) and a locknut (11); the limiting bolt (10) axially penetrates through the pipeline top seat (2) and the pipeline base (1) in sequence and is fastened through the locknut (11).

9. The pipe damping shock absorber of claim 8, characterized in that, the fastener is a plurality of, and is evenly distributed on the pipe footstock (2) and the pipe footstock (1).

10. The pipe damping shock absorber of claim 9, further comprising an anti-slip rubber pad disposed on a wall of the circular through hole.